autoprobes.py: fix default cast value
autoprobes.py: fix default cast value

cuckoobox/cuckoo,cuckoobox/cuckoo,rodionovd/cuckoo-osx-analyzer,rodionovd/cuckoo-osx-analyzer,cuckoobox/cuckoo,rodionovd/cuckoo-osx-analyzer,cuckoobox/cuckoo,cuckoobox/cuckoo